The grocery store may be the one-stop place where most of us do all our food shopping, but, for some items, making another stop at a different type of store can mean big savings. Like up to 20 percent saved, no coupons clipped.

In its guide to saving on groceries, Real Simple points out a few places and items for your strategic shopping. Pick up milk at a chain pharmacy like RiteAid, Walgreens, or CVS, for example. Although there will be fewer types of milk offered, you can save up to 20 percent a gallon. Drugstores are a better place to buy spices, personal care items, and (perhaps obviously) medicines, than the grocery store anyway, so while picking up those items, grab a gallon of milk for your savings.